:root {
  --ink: #15202b;
  --ink-muted: #5b6775;
  --paper: #eef2f5;
  --paper-elevated: #ffffff;
  --rule: #d3dae3;
  --accent: #0b6e6a;
  --accent-soft: rgba(11, 110, 106, 0.1);
  --link: #184e77;
  --shell-max: 44rem;
  --font-display: "Newsreader", "Iowan Old Style", Georgia, serif;
  --font-body: "IBM Plex Sans", "Helvetica Neue", Helvetica, Arial, sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background:
    radial-gradient(1000px 420px at 0% 0%, rgba(11, 110, 106, 0.1), transparent 55%),
    radial-gradient(800px 360px at 100% 0%, rgba(24, 78, 119, 0.08), transparent 50%),
    linear-gradient(180deg, #e7edf2 0%, var(--paper) 40%, #e9eef3 100%);
  font-family: var(--font-body);
  font-size: 1.05rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--link);
  text-underline-offset: 0.15em;
}

a:hover {
  color: var(--accent);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

.landing-shell {
  width: min(100% - 2rem, var(--shell-max));
  margin-inline: auto;
}

/* —— Header —— */

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(10px);
  background: rgba(238, 242, 245, 0.9);
  border-bottom: 1px solid rgba(211, 218, 227, 0.95);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 0;
}

.site-header .brand {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.site-header .brand a {
  color: var(--ink);
  text-decoration: none;
}

.site-header .brand a:hover {
  color: var(--accent);
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 1rem;
  font-size: 0.875rem;
}

.nav a {
  color: var(--ink-muted);
  text-decoration: none;
}

.nav a:hover {
  color: var(--accent);
  text-decoration: underline;
}

/* —— Banner —— */

.hero {
  padding: 8px 0 0;
}

.hero__row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem 1.5rem;
}

.hero__copy {
  flex: 1 1 16rem;
  min-width: min(100%, 16rem);
  max-width: 36rem;
}

.hero__purpose {
  margin: 0 0 0.5rem;
  font-family: var(--font-display);
  font-size: clamp(1.15rem, 2.6vw, 1.35rem);
  font-weight: 600;
  line-height: 1.4;
  color: var(--ink);
}

.hero__motivation {
  margin: 0;
  font-size: clamp(1.05rem, 2.4vw, 1.2rem);
  font-style: italic;
  line-height: 1.3;
  color: var(--ink-muted);
}

.hero__cta-group {
  flex: 0 0 auto;
  max-width: 16rem;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.45rem;
}

.hero__cta {
  flex: 0 0 auto;
}

.hero__cta-hint {
  margin: 0;
  font-size: 0.8rem;
  line-height: 1.4;
  color: var(--ink-muted);
}

.hero__cta-secondary {
  font-size: 0.85rem;
  color: var(--ink-muted);
  text-decoration: none;
}

.hero__cta-secondary:hover {
  color: var(--accent);
  text-decoration: underline;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.7rem 1.25rem;
  border-radius: 4px;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
}

.btn--primary {
  background: var(--accent);
  color: #fff;
}

.btn--primary:hover {
  background: #095c59;
  color: #fff;
}

.btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* —— Features (single composition) —— */

.feature {
  padding: 1.25rem 0 1.5rem;
}

.feature__row {
  display: grid;
  row-gap: 1.25rem;
  column-gap: 1.5rem;
  align-items: center;
  padding: 0.25rem 0;
}

@media (min-width: 640px) {
  .feature__row {
    grid-template-columns: minmax(0, 70fr) minmax(0, 30fr);
  }

  .feature__media {
    width: 100%;
    max-width: none;
    margin-inline: 0;
  }
}

.feature__media {
  width: 100%;
  max-width: 28rem;
  margin-inline: auto;
  aspect-ratio: 1;
  border-radius: 6px;
  overflow: hidden;
  background: #f3f1ec;
  border: 1px solid rgba(211, 218, 227, 0.9);
  box-shadow: 0 1px 0 rgba(21, 32, 43, 0.04), 0 12px 28px rgba(21, 32, 43, 0.06);
}

.feature__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.feature__copy h2 {
  margin: 0 0 0.75rem;
  font-family: var(--font-display);
  font-size: clamp(1.45rem, 3.5vw, 1.85rem);
  font-weight: 600;
  letter-spacing: -0.025em;
  line-height: 1.2;
}

.feature__copy ul {
  margin: 0;
  padding-left: 1.15rem;
  color: var(--ink-muted);
}

.feature__copy li + li {
  margin-top: 0.4rem;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}

/* —— Quick start —— */

.quick-start {
  padding: 0.5rem 0 2.75rem;
}

.quick-start__header {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.35rem 1rem;
  margin-bottom: 1.5rem;
}

.quick-start__header h2 {
  margin: 0;
  flex: 0 0 auto;
  font-family: var(--font-display);
  font-size: clamp(1.55rem, 3.5vw, 1.9rem);
  font-weight: 600;
  letter-spacing: -0.025em;
}

.quick-start__lead {
  margin: 0;
  flex: 1 1 14rem;
  min-width: min(100%, 14rem);
  color: var(--ink-muted);
}

.quick-start-track {
  margin-bottom: 2rem;
}

.quick-start-track:last-child {
  margin-bottom: 0;
}

.quick-start-track > h3 {
  margin: 0 0 0.85rem;
  font-family: var(--font-display);
  font-size: clamp(1.2rem, 2.8vw, 1.4rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.3;
}

.quick-start-steps {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: qs;
}

.quick-start-track + .quick-start-track .quick-start-steps {
  counter-reset: qs;
}

.quick-start-steps > li {
  position: relative;
  counter-increment: qs;
  padding: 1.15rem 0 1.15rem 2.75rem;
  border-top: 1px solid var(--rule);
}

.quick-start-steps > li::before {
  content: counter(qs);
  position: absolute;
  left: 0;
  top: 1.2rem;
  width: 1.85rem;
  height: 1.85rem;
  display: grid;
  place-items: center;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 0.85rem;
  font-weight: 600;
}

.step-heading {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem 0.65rem;
  margin-bottom: 0.35rem;
}

.step-heading h3,
.step-heading h4 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.step-tag {
  display: inline-block;
  flex: 0 0 auto;
  padding: 0.15rem 0.45rem;
  border-radius: 999px;
  border: 1px solid rgba(11, 110, 106, 0.35);
  background: var(--accent-soft);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--accent);
  line-height: 1.2;
  white-space: nowrap;
}

.quick-start-steps p {
  margin: 0;
  color: var(--ink-muted);
  font-size: 0.98rem;
}

.quick-start-steps code {
  font-size: 0.9em;
  word-break: break-all;
}

/* —— FAQ —— */

.faq {
  padding: 0.25rem 0 2.75rem;
}

.faq__header {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.35rem 1rem;
  margin-bottom: 1.25rem;
}

.faq__header h2 {
  margin: 0;
  flex: 0 0 auto;
  font-family: var(--font-display);
  font-size: clamp(1.55rem, 3.5vw, 1.9rem);
  font-weight: 600;
  letter-spacing: -0.025em;
}

.faq__lead {
  margin: 0;
  flex: 1 1 14rem;
  min-width: min(100%, 14rem);
  color: var(--ink-muted);
}

.faq-item {
  border-top: 1px solid var(--rule);
  padding: 0.85rem 0;
}

.faq-item:last-of-type {
  border-bottom: 1px solid var(--rule);
}

.faq-item summary {
  cursor: pointer;
  font-family: var(--font-display);
  font-size: 1.08rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.35;
  color: var(--ink);
  list-style: none;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::before {
  content: "▾ ";
  color: var(--accent);
  font-size: 0.9em;
}

.faq-item:not([open]) summary::before {
  content: "▸ ";
}

.faq-item summary:hover {
  color: var(--accent);
}

.faq-item > *:not(summary) {
  margin-top: 0.7rem;
}

.faq-item p,
.faq-item li {
  color: var(--ink-muted);
  font-size: 0.98rem;
}

.faq-item p {
  margin: 0 0 0.75rem;
}

.faq-item p:last-child {
  margin-bottom: 0;
}

.faq-item ul,
.faq-item ol {
  margin: 0;
  padding-left: 1.25rem;
}

.faq-item li + li {
  margin-top: 0.45rem;
}

.faq-table-wrap {
  width: 100%;
  overflow-x: auto;
  margin: 0.75rem 0 1rem;
  border: 1px solid var(--rule);
  border-radius: 4px;
}

.faq-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
  background: rgba(255, 255, 255, 0.65);
}

.faq-table th,
.faq-table td {
  padding: 0.65rem 0.8rem;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--rule);
}

.faq-table th {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--ink-muted);
  background: var(--accent-soft);
}

.faq-table tr:last-child td {
  border-bottom: none;
}

.faq-table td {
  color: var(--ink-muted);
}

.faq-disclaimer {
  font-size: 0.88rem !important;
  color: var(--ink-muted);
}

/* —— Footer —— */

.site-footer {
  padding: 0 0 3rem;
  font-size: 0.85rem;
  color: var(--ink-muted);
}

.site-footer__inner {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
  justify-content: space-between;
  align-items: baseline;
  padding-top: 1rem;
  border-top: 1px solid var(--rule);
}

.site-footer a {
  color: var(--ink-muted);
  text-decoration: none;
}

.site-footer a:hover {
  color: var(--accent);
  text-decoration: underline;
}

.site-footer__links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.1rem;
}

@media (max-width: 560px) {
  .site-header__inner {
    align-items: flex-start;
    flex-direction: column;
  }
}